Prosecutors said that Harold E. Waller, 45, now faces up to 10 years in prison.

The U.S. Department of Justice said that Waller admitted he knew he had various weapons when he was preparing to broad a plane earlier this year.

Waller drove from Montana to Sacramento and purchased a one-way ticket to Alaska from US Airways on March 22.

Waller then proceeded to the security checkpoint and waited to be screened by federal officials.

When Waller removed his jacket, he revealed a shoulder holster containing a gun, according to the Department of Justice.

A Transportation Security Administration employee also identified a gun in the first bang that went through an X-ray device, authorities said.

Waller later told authorities that the weapon inside the bag was his, and that he had additional guns, according to the Department of Justice. Once the weapons were discovered, the Sacramento Sheriff’s Department assisted in the investigation.

Each of Waller’s three bags contained a gun, and the gun in his shoulder holster was loaded, authorities said.

In addition, substantial amounts of ammunition were also found in his carry-on bag, the department said in a news release.

Waller is scheduled to be sentenced by a U.S. district judge Dec. 19. In addition to a maximum penalty of 10 years in prison, he also faces a $250,000 fine.